Multiplex communications – Generalized orthogonal or special mathematical techniques
Reexamination Certificate
2003-09-18
2008-08-12
Harper, Kevin C (Department: 2616)
Multiplex communications
Generalized orthogonal or special mathematical techniques
C370S479000, C370S480000
Reexamination Certificate
active
07411894
ABSTRACT:
A transceiver system and method in an OFDM communication system which enables exact symbol synchronization acquisition and improves performance for frequency offset and channel estimation. In the apparatus, a guard interval filling unit copies data at a predetermined interval in an input data row inputted to be transmitted, and fills in the copied data in the preset guard interval in the input data row. A selection unit selectively receives an output data row outputted from the guard interval filling means and unique words having a constant amplitude and a non-periodic auto-correlation characteristic, and outputs the OFDM symbol in which the unique words are inserted in the output data row.
REFERENCES:
patent: 2003/0227978 (2003-12-01), Magee et al.
patent: 2003/0231714 (2003-12-01), Kjeldsen et al.
Liao Jingyi, Pan Yuh Joo, Wang Hai, Jungmin Ro, DS Park, “The Effect of Filling Unique Words to Guard Interval for OFDM System”, IEEE c802.16a-02/87, pp. 0-8, Sep. 18, 2002.
Cao Fengming
Chen Yongchun
Joo Pan-Yuh
Liao Jingyl
Park Dong-Seek
Harper Kevin C
Samsung Electronics Co,. Ltd
The Farrell Law Firm PC
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